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Finding the Fourth Proportional to 288,699.93, 398,389.75 and 159,630.94

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Solution

The fourth proportional to 288,699.93, 398,389.75 and 159,630.94 is: 220,281.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,699.93 : 398,389.75 = 159,630.94 : x
  2. Step 2: Convert to fraction form
    288,699.93/398,389.75 = 159,630.94/x
  3. Step 3: Cross multiply
    288,699.93x = 398,389.75 × 159,630.94
  4. Step 4: Simplify right side
    288,699.93x = 63,595,330,278.87
  5. Step 5: Solve for x
    x = 63,595,330,278.87/288,699.93
  6. Step 6: Final answer
    x = 220,281.77

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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.