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Finding the Fourth Proportional to 288,041.80, 432,062.70 and 261,776.20

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Solution

The fourth proportional to 288,041.80, 432,062.70 and 261,776.20 is: 392,664.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,041.80 : 432,062.70 = 261,776.20 : x
  2. Step 2: Convert to fraction form
    288,041.80/432,062.70 = 261,776.20/x
  3. Step 3: Cross multiply
    288,041.80x = 432,062.70 × 261,776.20
  4. Step 4: Simplify right side
    288,041.80x = 113,103,731,767.74
  5. Step 5: Solve for x
    x = 113,103,731,767.74/288,041.80
  6. Step 6: Final answer
    x = 392,664.30

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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.