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Finding the Fourth Proportional to 531,090.65, 732,895.84 and 289,375.22

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Solution

The fourth proportional to 531,090.65, 732,895.84 and 289,375.22 is: 399,332.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,090.65 : 732,895.84 = 289,375.22 : x
  2. Step 2: Convert to fraction form
    531,090.65/732,895.84 = 289,375.22/x
  3. Step 3: Cross multiply
    531,090.65x = 732,895.84 × 289,375.22
  4. Step 4: Simplify right side
    531,090.65x = 212,081,893,490.21
  5. Step 5: Solve for x
    x = 212,081,893,490.21/531,090.65
  6. Step 6: Final answer
    x = 399,332.76

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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.