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Finding the Fourth Proportional to 279,802.77, 386,127.90 and 152,478.39

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Solution

The fourth proportional to 279,802.77, 386,127.90 and 152,478.39 is: 210,420.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,802.77 : 386,127.90 = 152,478.39 : x
  2. Step 2: Convert to fraction form
    279,802.77/386,127.90 = 152,478.39/x
  3. Step 3: Cross multiply
    279,802.77x = 386,127.90 × 152,478.39
  4. Step 4: Simplify right side
    279,802.77x = 58,876,160,526.08
  5. Step 5: Solve for x
    x = 58,876,160,526.08/279,802.77
  6. Step 6: Final answer
    x = 210,420.22

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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.