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Finding the Fourth Proportional to 423,013.80, 583,557.84 and 253,215.12

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Solution

The fourth proportional to 423,013.80, 583,557.84 and 253,215.12 is: 349,316.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,013.80 : 583,557.84 = 253,215.12 : x
  2. Step 2: Convert to fraction form
    423,013.80/583,557.84 = 253,215.12/x
  3. Step 3: Cross multiply
    423,013.80x = 583,557.84 × 253,215.12
  4. Step 4: Simplify right side
    423,013.80x = 147,765,668,482.54
  5. Step 5: Solve for x
    x = 147,765,668,482.54/423,013.80
  6. Step 6: Final answer
    x = 349,316.43

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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.