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Finding the Fourth Proportional to 552,113.68, 761,912.28 and 310,397.32

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Solution

The fourth proportional to 552,113.68, 761,912.28 and 310,397.32 is: 428,345.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,113.68 : 761,912.28 = 310,397.32 : x
  2. Step 2: Convert to fraction form
    552,113.68/761,912.28 = 310,397.32/x
  3. Step 3: Cross multiply
    552,113.68x = 761,912.28 × 310,397.32
  4. Step 4: Simplify right side
    552,113.68x = 236,495,529,787.09
  5. Step 5: Solve for x
    x = 236,495,529,787.09/552,113.68
  6. Step 6: Final answer
    x = 428,345.72

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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.