Home / 305,973.95-459,010.08-128,531.70

Finding the Fourth Proportional to 305,973.95, 459,010.08 and 128,531.70

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Solution

The fourth proportional to 305,973.95, 459,010.08 and 128,531.70 is: 192,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,973.95 : 459,010.08 = 128,531.70 : x
  2. Step 2: Convert to fraction form
    305,973.95/459,010.08 = 128,531.70/x
  3. Step 3: Cross multiply
    305,973.95x = 459,010.08 × 128,531.70
  4. Step 4: Simplify right side
    305,973.95x = 58,997,345,899.54
  5. Step 5: Solve for x
    x = 58,997,345,899.54/305,973.95
  6. Step 6: Final answer
    x = 192,818.20

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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.