Home / 278,412.08-384,208.45-157,551.17

Finding the Fourth Proportional to 278,412.08, 384,208.45 and 157,551.17

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Solution

The fourth proportional to 278,412.08, 384,208.45 and 157,551.17 is: 217,420.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,412.08 : 384,208.45 = 157,551.17 : x
  2. Step 2: Convert to fraction form
    278,412.08/384,208.45 = 157,551.17/x
  3. Step 3: Cross multiply
    278,412.08x = 384,208.45 × 157,551.17
  4. Step 4: Simplify right side
    278,412.08x = 60,532,488,506.47
  5. Step 5: Solve for x
    x = 60,532,488,506.47/278,412.08
  6. Step 6: Final answer
    x = 217,420.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.