Home / 278,353.32-417,544.02-78,688.04

Finding the Fourth Proportional to 278,353.32, 417,544.02 and 78,688.04

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Solution

The fourth proportional to 278,353.32, 417,544.02 and 78,688.04 is: 118,036.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,353.32 : 417,544.02 = 78,688.04 : x
  2. Step 2: Convert to fraction form
    278,353.32/417,544.02 = 78,688.04/x
  3. Step 3: Cross multiply
    278,353.32x = 417,544.02 × 78,688.04
  4. Step 4: Simplify right side
    278,353.32x = 32,855,720,547.52
  5. Step 5: Solve for x
    x = 32,855,720,547.52/278,353.32
  6. Step 6: Final answer
    x = 118,036.03

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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.