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Finding the Fourth Proportional to 553,479.60, 830,460.66 and 193,908.42

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Solution

The fourth proportional to 553,479.60, 830,460.66 and 193,908.42 is: 290,947.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,479.60 : 830,460.66 = 193,908.42 : x
  2. Step 2: Convert to fraction form
    553,479.60/830,460.66 = 193,908.42/x
  3. Step 3: Cross multiply
    553,479.60x = 830,460.66 × 193,908.42
  4. Step 4: Simplify right side
    553,479.60x = 161,033,314,452.76
  5. Step 5: Solve for x
    x = 161,033,314,452.76/553,479.60
  6. Step 6: Final answer
    x = 290,947.15

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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.