Home / 459,565.40-689,353.18-139,769.35

Finding the Fourth Proportional to 459,565.40, 689,353.18 and 139,769.35

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Solution

The fourth proportional to 459,565.40, 689,353.18 and 139,769.35 is: 209,655.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,565.40 : 689,353.18 = 139,769.35 : x
  2. Step 2: Convert to fraction form
    459,565.40/689,353.18 = 139,769.35/x
  3. Step 3: Cross multiply
    459,565.40x = 689,353.18 × 139,769.35
  4. Step 4: Simplify right side
    459,565.40x = 96,350,444,602.43
  5. Step 5: Solve for x
    x = 96,350,444,602.43/459,565.40
  6. Step 6: Final answer
    x = 209,655.57

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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.