Home / 459,114.90-688,672.35-143,603.70

Finding the Fourth Proportional to 459,114.90, 688,672.35 and 143,603.70

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Solution

The fourth proportional to 459,114.90, 688,672.35 and 143,603.70 is: 215,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,114.90 : 688,672.35 = 143,603.70 : x
  2. Step 2: Convert to fraction form
    459,114.90/688,672.35 = 143,603.70/x
  3. Step 3: Cross multiply
    459,114.90x = 688,672.35 × 143,603.70
  4. Step 4: Simplify right side
    459,114.90x = 98,895,897,547.70
  5. Step 5: Solve for x
    x = 98,895,897,547.70/459,114.90
  6. Step 6: Final answer
    x = 215,405.55

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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.