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Finding the Fourth Proportional to 305,488.04, 458,143.50 and 127,990.04

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Solution

The fourth proportional to 305,488.04, 458,143.50 and 127,990.04 is: 191,947.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,488.04 : 458,143.50 = 127,990.04 : x
  2. Step 2: Convert to fraction form
    305,488.04/458,143.50 = 127,990.04/x
  3. Step 3: Cross multiply
    305,488.04x = 458,143.50 × 127,990.04
  4. Step 4: Simplify right side
    305,488.04x = 58,637,804,890.74
  5. Step 5: Solve for x
    x = 58,637,804,890.74/305,488.04
  6. Step 6: Final answer
    x = 191,947.96

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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.