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Finding the Fourth Proportional to 346,642.90, 520,061.55 and 147,058.90

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Solution

The fourth proportional to 346,642.90, 520,061.55 and 147,058.90 is: 220,629.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,642.90 : 520,061.55 = 147,058.90 : x
  2. Step 2: Convert to fraction form
    346,642.90/520,061.55 = 147,058.90/x
  3. Step 3: Cross multiply
    346,642.90x = 520,061.55 × 147,058.90
  4. Step 4: Simplify right side
    346,642.90x = 76,479,679,475.30
  5. Step 5: Solve for x
    x = 76,479,679,475.30/346,642.90
  6. Step 6: Final answer
    x = 220,629.59

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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.