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Finding the Fourth Proportional to 402,756.68, 555,884.70 and 307,092.44

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Solution

The fourth proportional to 402,756.68, 555,884.70 and 307,092.44 is: 423,848.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,756.68 : 555,884.70 = 307,092.44 : x
  2. Step 2: Convert to fraction form
    402,756.68/555,884.70 = 307,092.44/x
  3. Step 3: Cross multiply
    402,756.68x = 555,884.70 × 307,092.44
  4. Step 4: Simplify right side
    402,756.68x = 170,707,988,881.67
  5. Step 5: Solve for x
    x = 170,707,988,881.67/402,756.68
  6. Step 6: Final answer
    x = 423,848.93

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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.