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Finding the Fourth Proportional to 286,882.40, 430,323.60 and 207,624.80

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Solution

The fourth proportional to 286,882.40, 430,323.60 and 207,624.80 is: 311,437.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,882.40 : 430,323.60 = 207,624.80 : x
  2. Step 2: Convert to fraction form
    286,882.40/430,323.60 = 207,624.80/x
  3. Step 3: Cross multiply
    286,882.40x = 430,323.60 × 207,624.80
  4. Step 4: Simplify right side
    286,882.40x = 89,345,851,385.28
  5. Step 5: Solve for x
    x = 89,345,851,385.28/286,882.40
  6. Step 6: Final answer
    x = 311,437.20

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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.