Home / 459,439.02-689,158.56-143,920.50

Finding the Fourth Proportional to 459,439.02, 689,158.56 and 143,920.50

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Solution

The fourth proportional to 459,439.02, 689,158.56 and 143,920.50 is: 215,880.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,439.02 : 689,158.56 = 143,920.50 : x
  2. Step 2: Convert to fraction form
    459,439.02/689,158.56 = 143,920.50/x
  3. Step 3: Cross multiply
    459,439.02x = 689,158.56 × 143,920.50
  4. Step 4: Simplify right side
    459,439.02x = 99,184,044,534.48
  5. Step 5: Solve for x
    x = 99,184,044,534.48/459,439.02
  6. Step 6: Final answer
    x = 215,880.76

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Similar ratio
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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.