Home / 402,446.07-555,144.31-251,280.63

Finding the Fourth Proportional to 402,446.07, 555,144.31 and 251,280.63

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Solution

The fourth proportional to 402,446.07, 555,144.31 and 251,280.63 is: 346,622.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,446.07 : 555,144.31 = 251,280.63 : x
  2. Step 2: Convert to fraction form
    402,446.07/555,144.31 = 251,280.63/x
  3. Step 3: Cross multiply
    402,446.07x = 555,144.31 × 251,280.63
  4. Step 4: Simplify right side
    402,446.07x = 139,497,011,957.72
  5. Step 5: Solve for x
    x = 139,497,011,957.72/402,446.07
  6. Step 6: Final answer
    x = 346,622.87

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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.