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Finding the Fourth Proportional to 559,209.72, 771,718.20 and 304,560.72

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Solution

The fourth proportional to 559,209.72, 771,718.20 and 304,560.72 is: 420,298.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,209.72 : 771,718.20 = 304,560.72 : x
  2. Step 2: Convert to fraction form
    559,209.72/771,718.20 = 304,560.72/x
  3. Step 3: Cross multiply
    559,209.72x = 771,718.20 × 304,560.72
  4. Step 4: Simplify right side
    559,209.72x = 235,035,050,629.10
  5. Step 5: Solve for x
    x = 235,035,050,629.10/559,209.72
  6. Step 6: Final answer
    x = 420,298.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.