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Finding the Fourth Proportional to 423,019.80, 583,566.12 and 253,221.12

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Solution

The fourth proportional to 423,019.80, 583,566.12 and 253,221.12 is: 349,324.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,019.80 : 583,566.12 = 253,221.12 : x
  2. Step 2: Convert to fraction form
    423,019.80/583,566.12 = 253,221.12/x
  3. Step 3: Cross multiply
    423,019.80x = 583,566.12 × 253,221.12
  4. Step 4: Simplify right side
    423,019.80x = 147,771,266,500.45
  5. Step 5: Solve for x
    x = 147,771,266,500.45/423,019.80
  6. Step 6: Final answer
    x = 349,324.70

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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.