Home / 406,931.08-561,566.10-225,655.78

Finding the Fourth Proportional to 406,931.08, 561,566.10 and 225,655.78

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Solution

The fourth proportional to 406,931.08, 561,566.10 and 225,655.78 is: 311,405.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,931.08 : 561,566.10 = 225,655.78 : x
  2. Step 2: Convert to fraction form
    406,931.08/561,566.10 = 225,655.78/x
  3. Step 3: Cross multiply
    406,931.08x = 561,566.10 × 225,655.78
  4. Step 4: Simplify right side
    406,931.08x = 126,720,636,317.06
  5. Step 5: Solve for x
    x = 126,720,636,317.06/406,931.08
  6. Step 6: Final answer
    x = 311,405.65

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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.