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Finding the Fourth Proportional to 529,137.94, 730,223.94 and 287,434.34

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Solution

The fourth proportional to 529,137.94, 730,223.94 and 287,434.34 is: 396,666.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,137.94 : 730,223.94 = 287,434.34 : x
  2. Step 2: Convert to fraction form
    529,137.94/730,223.94 = 287,434.34/x
  3. Step 3: Cross multiply
    529,137.94x = 730,223.94 × 287,434.34
  4. Step 4: Simplify right side
    529,137.94x = 209,891,436,246.10
  5. Step 5: Solve for x
    x = 209,891,436,246.10/529,137.94
  6. Step 6: Final answer
    x = 396,666.77

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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.