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Finding the Fourth Proportional to 302,839.65, 453,767.40 and 260,521.20

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Solution

The fourth proportional to 302,839.65, 453,767.40 and 260,521.20 is: 390,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,839.65 : 453,767.40 = 260,521.20 : x
  2. Step 2: Convert to fraction form
    302,839.65/453,767.40 = 260,521.20/x
  3. Step 3: Cross multiply
    302,839.65x = 453,767.40 × 260,521.20
  4. Step 4: Simplify right side
    302,839.65x = 118,216,027,568.88
  5. Step 5: Solve for x
    x = 118,216,027,568.88/302,839.65
  6. Step 6: Final answer
    x = 390,358.49

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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.