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Finding the Fourth Proportional to 402,238.68, 555,089.46 and 220,953.66

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Solution

The fourth proportional to 402,238.68, 555,089.46 and 220,953.66 is: 304,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,238.68 : 555,089.46 = 220,953.66 : x
  2. Step 2: Convert to fraction form
    402,238.68/555,089.46 = 220,953.66/x
  3. Step 3: Cross multiply
    402,238.68x = 555,089.46 × 220,953.66
  4. Step 4: Simplify right side
    402,238.68x = 122,649,047,814.42
  5. Step 5: Solve for x
    x = 122,649,047,814.42/402,238.68
  6. Step 6: Final answer
    x = 304,916.10

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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.