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Finding the Fourth Proportional to 288,412.62, 432,312.57 and 170,139.66

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Solution

The fourth proportional to 288,412.62, 432,312.57 and 170,139.66 is: 255,028.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,412.62 : 432,312.57 = 170,139.66 : x
  2. Step 2: Convert to fraction form
    288,412.62/432,312.57 = 170,139.66/x
  3. Step 3: Cross multiply
    288,412.62x = 432,312.57 × 170,139.66
  4. Step 4: Simplify right side
    288,412.62x = 73,553,513,673.53
  5. Step 5: Solve for x
    x = 73,553,513,673.53/288,412.62
  6. Step 6: Final answer
    x = 255,028.76

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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.