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Finding the Fourth Proportional to 369,132.60, 553,698.90 and 209,700.30

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Solution

The fourth proportional to 369,132.60, 553,698.90 and 209,700.30 is: 314,550.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,132.60 : 553,698.90 = 209,700.30 : x
  2. Step 2: Convert to fraction form
    369,132.60/553,698.90 = 209,700.30/x
  3. Step 3: Cross multiply
    369,132.60x = 553,698.90 × 209,700.30
  4. Step 4: Simplify right side
    369,132.60x = 116,110,825,439.67
  5. Step 5: Solve for x
    x = 116,110,825,439.67/369,132.60
  6. Step 6: Final answer
    x = 314,550.45

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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.