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Finding the Fourth Proportional to 538,746.18, 808,123.31 and 239,146.21

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Solution

The fourth proportional to 538,746.18, 808,123.31 and 239,146.21 is: 358,721.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,746.18 : 808,123.31 = 239,146.21 : x
  2. Step 2: Convert to fraction form
    538,746.18/808,123.31 = 239,146.21/x
  3. Step 3: Cross multiply
    538,746.18x = 808,123.31 × 239,146.21
  4. Step 4: Simplify right side
    538,746.18x = 193,259,626,799.16
  5. Step 5: Solve for x
    x = 193,259,626,799.16/538,746.18
  6. Step 6: Final answer
    x = 358,721.11

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.