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Finding the Fourth Proportional to 406,521.61, 561,017.78 and 225,233.49

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Solution

The fourth proportional to 406,521.61, 561,017.78 and 225,233.49 is: 310,832.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,521.61 : 561,017.78 = 225,233.49 : x
  2. Step 2: Convert to fraction form
    406,521.61/561,017.78 = 225,233.49/x
  3. Step 3: Cross multiply
    406,521.61x = 561,017.78 × 225,233.49
  4. Step 4: Simplify right side
    406,521.61x = 126,359,994,130.53
  5. Step 5: Solve for x
    x = 126,359,994,130.53/406,521.61
  6. Step 6: Final answer
    x = 310,832.17

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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.