Home / 459,031.20-688,611.60-143,455.20

Finding the Fourth Proportional to 459,031.20, 688,611.60 and 143,455.20

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Solution

The fourth proportional to 459,031.20, 688,611.60 and 143,455.20 is: 215,203.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,031.20 : 688,611.60 = 143,455.20 : x
  2. Step 2: Convert to fraction form
    459,031.20/688,611.60 = 143,455.20/x
  3. Step 3: Cross multiply
    459,031.20x = 688,611.60 × 143,455.20
  4. Step 4: Simplify right side
    459,031.20x = 98,784,914,800.32
  5. Step 5: Solve for x
    x = 98,784,914,800.32/459,031.20
  6. Step 6: Final answer
    x = 215,203.05

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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.