Home / 279,477.20-385,685.47-152,159.78

Finding the Fourth Proportional to 279,477.20, 385,685.47 and 152,159.78

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Solution

The fourth proportional to 279,477.20, 385,685.47 and 152,159.78 is: 209,984.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,477.20 : 385,685.47 = 152,159.78 : x
  2. Step 2: Convert to fraction form
    279,477.20/385,685.47 = 152,159.78/x
  3. Step 3: Cross multiply
    279,477.20x = 385,685.47 × 152,159.78
  4. Step 4: Simplify right side
    279,477.20x = 58,685,816,264.40
  5. Step 5: Solve for x
    x = 58,685,816,264.40/279,477.20
  6. Step 6: Final answer
    x = 209,984.27

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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.