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Finding the Fourth Proportional to 369,088.80, 553,633.20 and 315,944.70

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Solution

The fourth proportional to 369,088.80, 553,633.20 and 315,944.70 is: 473,917.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,088.80 : 553,633.20 = 315,944.70 : x
  2. Step 2: Convert to fraction form
    369,088.80/553,633.20 = 315,944.70/x
  3. Step 3: Cross multiply
    369,088.80x = 553,633.20 × 315,944.70
  4. Step 4: Simplify right side
    369,088.80x = 174,917,475,284.04
  5. Step 5: Solve for x
    x = 174,917,475,284.04/369,088.80
  6. Step 6: Final answer
    x = 473,917.05

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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.