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Finding the Fourth Proportional to 529,210.62, 730,315.71 and 287,495.01

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Solution

The fourth proportional to 529,210.62, 730,315.71 and 287,495.01 is: 396,745.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,210.62 : 730,315.71 = 287,495.01 : x
  2. Step 2: Convert to fraction form
    529,210.62/730,315.71 = 287,495.01/x
  3. Step 3: Cross multiply
    529,210.62x = 730,315.71 × 287,495.01
  4. Step 4: Simplify right side
    529,210.62x = 209,962,122,349.61
  5. Step 5: Solve for x
    x = 209,962,122,349.61/529,210.62
  6. Step 6: Final answer
    x = 396,745.86

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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.