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Finding the Fourth Proportional to 282,925.84, 390,445.05 and 155,604.78

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Solution

The fourth proportional to 282,925.84, 390,445.05 and 155,604.78 is: 214,738.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,925.84 : 390,445.05 = 155,604.78 : x
  2. Step 2: Convert to fraction form
    282,925.84/390,445.05 = 155,604.78/x
  3. Step 3: Cross multiply
    282,925.84x = 390,445.05 × 155,604.78
  4. Step 4: Simplify right side
    282,925.84x = 60,755,116,107.34
  5. Step 5: Solve for x
    x = 60,755,116,107.34/282,925.84
  6. Step 6: Final answer
    x = 214,738.66

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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.