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Finding the Fourth Proportional to 345,437.80, 518,312.22 and 187,429.48

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Solution

The fourth proportional to 345,437.80, 518,312.22 and 187,429.48 is: 281,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,437.80 : 518,312.22 = 187,429.48 : x
  2. Step 2: Convert to fraction form
    345,437.80/518,312.22 = 187,429.48/x
  3. Step 3: Cross multiply
    345,437.80x = 518,312.22 × 187,429.48
  4. Step 4: Simplify right side
    345,437.80x = 97,146,987,873.60
  5. Step 5: Solve for x
    x = 97,146,987,873.60/345,437.80
  6. Step 6: Final answer
    x = 281,228.60

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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.