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Finding the Fourth Proportional to 216,779.66, 325,140.72 and 98,423.78

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Solution

The fourth proportional to 216,779.66, 325,140.72 and 98,423.78 is: 147,622.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,779.66 : 325,140.72 = 98,423.78 : x
  2. Step 2: Convert to fraction form
    216,779.66/325,140.72 = 98,423.78/x
  3. Step 3: Cross multiply
    216,779.66x = 325,140.72 × 98,423.78
  4. Step 4: Simplify right side
    216,779.66x = 32,001,578,694.32
  5. Step 5: Solve for x
    x = 32,001,578,694.32/216,779.66
  6. Step 6: Final answer
    x = 147,622.61

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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.