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Finding the Fourth Proportional to 268,856.80, 371,000.40 and 155,686.88

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Solution

The fourth proportional to 268,856.80, 371,000.40 and 155,686.88 is: 214,835.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,856.80 : 371,000.40 = 155,686.88 : x
  2. Step 2: Convert to fraction form
    268,856.80/371,000.40 = 155,686.88/x
  3. Step 3: Cross multiply
    268,856.80x = 371,000.40 × 155,686.88
  4. Step 4: Simplify right side
    268,856.80x = 57,759,894,754.75
  5. Step 5: Solve for x
    x = 57,759,894,754.75/268,856.80
  6. Step 6: Final answer
    x = 214,835.16

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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.