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Finding the Fourth Proportional to 351,298.80, 526,888.68 and 98,521.20

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Solution

The fourth proportional to 351,298.80, 526,888.68 and 98,521.20 is: 147,765.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,298.80 : 526,888.68 = 98,521.20 : x
  2. Step 2: Convert to fraction form
    351,298.80/526,888.68 = 98,521.20/x
  3. Step 3: Cross multiply
    351,298.80x = 526,888.68 × 98,521.20
  4. Step 4: Simplify right side
    351,298.80x = 51,909,705,020.02
  5. Step 5: Solve for x
    x = 51,909,705,020.02/351,298.80
  6. Step 6: Final answer
    x = 147,765.11

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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.