Home / 426,686.10-640,281.65-157,003.62

Finding the Fourth Proportional to 426,686.10, 640,281.65 and 157,003.62

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Solution

The fourth proportional to 426,686.10, 640,281.65 and 157,003.62 is: 235,598.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,686.10 : 640,281.65 = 157,003.62 : x
  2. Step 2: Convert to fraction form
    426,686.10/640,281.65 = 157,003.62/x
  3. Step 3: Cross multiply
    426,686.10x = 640,281.65 × 157,003.62
  4. Step 4: Simplify right side
    426,686.10x = 100,526,534,566.64
  5. Step 5: Solve for x
    x = 100,526,534,566.64/426,686.10
  6. Step 6: Final answer
    x = 235,598.33

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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.