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Finding the Fourth Proportional to 292,721.60, 403,955.64 and 158,585.60

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Solution

The fourth proportional to 292,721.60, 403,955.64 and 158,585.60 is: 218,848.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,721.60 : 403,955.64 = 158,585.60 : x
  2. Step 2: Convert to fraction form
    292,721.60/403,955.64 = 158,585.60/x
  3. Step 3: Cross multiply
    292,721.60x = 403,955.64 × 158,585.60
  4. Step 4: Simplify right side
    292,721.60x = 64,061,547,542.78
  5. Step 5: Solve for x
    x = 64,061,547,542.78/292,721.60
  6. Step 6: Final answer
    x = 218,848.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.