Home / 459,129.88-688,707.14-143,586.80

Finding the Fourth Proportional to 459,129.88, 688,707.14 and 143,586.80

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Solution

The fourth proportional to 459,129.88, 688,707.14 and 143,586.80 is: 215,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,129.88 : 688,707.14 = 143,586.80 : x
  2. Step 2: Convert to fraction form
    459,129.88/688,707.14 = 143,586.80/x
  3. Step 3: Cross multiply
    459,129.88x = 688,707.14 × 143,586.80
  4. Step 4: Simplify right side
    459,129.88x = 98,889,254,369.75
  5. Step 5: Solve for x
    x = 98,889,254,369.75/459,129.88
  6. Step 6: Final answer
    x = 215,384.05

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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.