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Finding the Fourth Proportional to 531,090.15, 732,895.15 and 289,374.72

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Solution

The fourth proportional to 531,090.15, 732,895.15 and 289,374.72 is: 399,332.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,090.15 : 732,895.15 = 289,374.72 : x
  2. Step 2: Convert to fraction form
    531,090.15/732,895.15 = 289,374.72/x
  3. Step 3: Cross multiply
    531,090.15x = 732,895.15 × 289,374.72
  4. Step 4: Simplify right side
    531,090.15x = 212,081,327,373.73
  5. Step 5: Solve for x
    x = 212,081,327,373.73/531,090.15
  6. Step 6: Final answer
    x = 399,332.07

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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.