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Finding the Fourth Proportional to 296,661.16, 445,017.96 and 83,430.88

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Solution

The fourth proportional to 296,661.16, 445,017.96 and 83,430.88 is: 125,153.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,661.16 : 445,017.96 = 83,430.88 : x
  2. Step 2: Convert to fraction form
    296,661.16/445,017.96 = 83,430.88/x
  3. Step 3: Cross multiply
    296,661.16x = 445,017.96 × 83,430.88
  4. Step 4: Simplify right side
    296,661.16x = 37,128,240,018.60
  5. Step 5: Solve for x
    x = 37,128,240,018.60/296,661.16
  6. Step 6: Final answer
    x = 125,153.69

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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.