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Finding the Fourth Proportional to 288,991.77, 398,888.87 and 168,156.48

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Solution

The fourth proportional to 288,991.77, 398,888.87 and 168,156.48 is: 232,102.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,991.77 : 398,888.87 = 168,156.48 : x
  2. Step 2: Convert to fraction form
    288,991.77/398,888.87 = 168,156.48/x
  3. Step 3: Cross multiply
    288,991.77x = 398,888.87 × 168,156.48
  4. Step 4: Simplify right side
    288,991.77x = 67,075,745,953.76
  5. Step 5: Solve for x
    x = 67,075,745,953.76/288,991.77
  6. Step 6: Final answer
    x = 232,102.62

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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.