Home / 305,586.45-458,543.70-128,111.40

Finding the Fourth Proportional to 305,586.45, 458,543.70 and 128,111.40

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Solution

The fourth proportional to 305,586.45, 458,543.70 and 128,111.40 is: 192,235.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,586.45 : 458,543.70 = 128,111.40 : x
  2. Step 2: Convert to fraction form
    305,586.45/458,543.70 = 128,111.40/x
  3. Step 3: Cross multiply
    305,586.45x = 458,543.70 × 128,111.40
  4. Step 4: Simplify right side
    305,586.45x = 58,744,675,368.18
  5. Step 5: Solve for x
    x = 58,744,675,368.18/305,586.45
  6. Step 6: Final answer
    x = 192,235.86

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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.