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Finding the Fourth Proportional to 529,158.36, 730,243.98 and 287,445.72

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Solution

The fourth proportional to 529,158.36, 730,243.98 and 287,445.72 is: 396,678.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,158.36 : 730,243.98 = 287,445.72 : x
  2. Step 2: Convert to fraction form
    529,158.36/730,243.98 = 287,445.72/x
  3. Step 3: Cross multiply
    529,158.36x = 730,243.98 × 287,445.72
  4. Step 4: Simplify right side
    529,158.36x = 209,905,506,606.77
  5. Step 5: Solve for x
    x = 209,905,506,606.77/529,158.36
  6. Step 6: Final answer
    x = 396,678.05

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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.