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Finding the Fourth Proportional to 531,216.88, 797,060.51 and 278,437.28

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Solution

The fourth proportional to 531,216.88, 797,060.51 and 278,437.28 is: 417,779.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,216.88 : 797,060.51 = 278,437.28 : x
  2. Step 2: Convert to fraction form
    531,216.88/797,060.51 = 278,437.28/x
  3. Step 3: Cross multiply
    531,216.88x = 797,060.51 × 278,437.28
  4. Step 4: Simplify right side
    531,216.88x = 221,931,356,066.46
  5. Step 5: Solve for x
    x = 221,931,356,066.46/531,216.88
  6. Step 6: Final answer
    x = 417,779.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.