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Finding the Fourth Proportional to 282,334.61, 389,622.53 and 155,018.45

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Solution

The fourth proportional to 282,334.61, 389,622.53 and 155,018.45 is: 213,925.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,334.61 : 389,622.53 = 155,018.45 : x
  2. Step 2: Convert to fraction form
    282,334.61/389,622.53 = 155,018.45/x
  3. Step 3: Cross multiply
    282,334.61x = 389,622.53 × 155,018.45
  4. Step 4: Simplify right side
    282,334.61x = 60,398,679,910.59
  5. Step 5: Solve for x
    x = 60,398,679,910.59/282,334.61
  6. Step 6: Final answer
    x = 213,925.88

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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.