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Finding the Fourth Proportional to 553,699.80, 830,549.70 and 154,368.59

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Solution

The fourth proportional to 553,699.80, 830,549.70 and 154,368.59 is: 231,552.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,699.80 : 830,549.70 = 154,368.59 : x
  2. Step 2: Convert to fraction form
    553,699.80/830,549.70 = 154,368.59/x
  3. Step 3: Cross multiply
    553,699.80x = 830,549.70 × 154,368.59
  4. Step 4: Simplify right side
    553,699.80x = 128,210,781,961.17
  5. Step 5: Solve for x
    x = 128,210,781,961.17/553,699.80
  6. Step 6: Final answer
    x = 231,552.88

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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.