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Finding the Fourth Proportional to 369,089.80, 553,634.70 and 315,945.70

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Solution

The fourth proportional to 369,089.80, 553,634.70 and 315,945.70 is: 473,918.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,089.80 : 553,634.70 = 315,945.70 : x
  2. Step 2: Convert to fraction form
    369,089.80/553,634.70 = 315,945.70/x
  3. Step 3: Cross multiply
    369,089.80x = 553,634.70 × 315,945.70
  4. Step 4: Simplify right side
    369,089.80x = 174,918,502,835.79
  5. Step 5: Solve for x
    x = 174,918,502,835.79/369,089.80
  6. Step 6: Final answer
    x = 473,918.55

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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.