Home / 278,291.07-384,041.76-157,429.80

Finding the Fourth Proportional to 278,291.07, 384,041.76 and 157,429.80

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Solution

The fourth proportional to 278,291.07, 384,041.76 and 157,429.80 is: 217,253.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,291.07 : 384,041.76 = 157,429.80 : x
  2. Step 2: Convert to fraction form
    278,291.07/384,041.76 = 157,429.80/x
  3. Step 3: Cross multiply
    278,291.07x = 384,041.76 × 157,429.80
  4. Step 4: Simplify right side
    278,291.07x = 60,459,617,468.45
  5. Step 5: Solve for x
    x = 60,459,617,468.45/278,291.07
  6. Step 6: Final answer
    x = 217,253.17

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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.