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Finding the Fourth Proportional to 353,680.32, 530,666.40 and 143,264.64

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Solution

The fourth proportional to 353,680.32, 530,666.40 and 143,264.64 is: 214,956.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,680.32 : 530,666.40 = 143,264.64 : x
  2. Step 2: Convert to fraction form
    353,680.32/530,666.40 = 143,264.64/x
  3. Step 3: Cross multiply
    353,680.32x = 530,666.40 × 143,264.64
  4. Step 4: Simplify right side
    353,680.32x = 76,025,730,756.10
  5. Step 5: Solve for x
    x = 76,025,730,756.10/353,680.32
  6. Step 6: Final answer
    x = 214,956.07

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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.