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Finding the Fourth Proportional to 310,377.66, 428,307.36 and 181,328.10

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Solution

The fourth proportional to 310,377.66, 428,307.36 and 181,328.10 is: 250,224.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,377.66 : 428,307.36 = 181,328.10 : x
  2. Step 2: Convert to fraction form
    310,377.66/428,307.36 = 181,328.10/x
  3. Step 3: Cross multiply
    310,377.66x = 428,307.36 × 181,328.10
  4. Step 4: Simplify right side
    310,377.66x = 77,664,159,804.82
  5. Step 5: Solve for x
    x = 77,664,159,804.82/310,377.66
  6. Step 6: Final answer
    x = 250,224.71

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1.5x scale

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.