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Finding the Fourth Proportional to 553,789.95, 830,825.03 and 154,430.76

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Solution

The fourth proportional to 553,789.95, 830,825.03 and 154,430.76 is: 231,685.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,789.95 : 830,825.03 = 154,430.76 : x
  2. Step 2: Convert to fraction form
    553,789.95/830,825.03 = 154,430.76/x
  3. Step 3: Cross multiply
    553,789.95x = 830,825.03 × 154,430.76
  4. Step 4: Simplify right side
    553,789.95x = 128,304,940,037.77
  5. Step 5: Solve for x
    x = 128,304,940,037.77/553,789.95
  6. Step 6: Final answer
    x = 231,685.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.