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Finding the Fourth Proportional to 386,053.48, 532,775.70 and 216,342.28

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Solution

The fourth proportional to 386,053.48, 532,775.70 and 216,342.28 is: 298,564.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,053.48 : 532,775.70 = 216,342.28 : x
  2. Step 2: Convert to fraction form
    386,053.48/532,775.70 = 216,342.28/x
  3. Step 3: Cross multiply
    386,053.48x = 532,775.70 × 216,342.28
  4. Step 4: Simplify right side
    386,053.48x = 115,261,909,666.60
  5. Step 5: Solve for x
    x = 115,261,909,666.60/386,053.48
  6. Step 6: Final answer
    x = 298,564.62

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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.