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Finding the Fourth Proportional to 289,360.80, 399,303.36 and 160,292.16

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Solution

The fourth proportional to 289,360.80, 399,303.36 and 160,292.16 is: 221,195.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,360.80 : 399,303.36 = 160,292.16 : x
  2. Step 2: Convert to fraction form
    289,360.80/399,303.36 = 160,292.16/x
  3. Step 3: Cross multiply
    289,360.80x = 399,303.36 × 160,292.16
  4. Step 4: Simplify right side
    289,360.80x = 64,005,198,069.66
  5. Step 5: Solve for x
    x = 64,005,198,069.66/289,360.80
  6. Step 6: Final answer
    x = 221,195.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.