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Finding the Fourth Proportional to 440,014.80, 660,281.40 and 290,686.80

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Solution

The fourth proportional to 440,014.80, 660,281.40 and 290,686.80 is: 436,201.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,014.80 : 660,281.40 = 290,686.80 : x
  2. Step 2: Convert to fraction form
    440,014.80/660,281.40 = 290,686.80/x
  3. Step 3: Cross multiply
    440,014.80x = 660,281.40 × 290,686.80
  4. Step 4: Simplify right side
    440,014.80x = 191,935,087,265.52
  5. Step 5: Solve for x
    x = 191,935,087,265.52/440,014.80
  6. Step 6: Final answer
    x = 436,201.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.