Home / 659,528.28-989,364.15-210,143.52

Finding the Fourth Proportional to 659,528.28, 989,364.15 and 210,143.52

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Solution

The fourth proportional to 659,528.28, 989,364.15 and 210,143.52 is: 315,238.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,528.28 : 989,364.15 = 210,143.52 : x
  2. Step 2: Convert to fraction form
    659,528.28/989,364.15 = 210,143.52/x
  3. Step 3: Cross multiply
    659,528.28x = 989,364.15 × 210,143.52
  4. Step 4: Simplify right side
    659,528.28x = 207,908,465,042.81
  5. Step 5: Solve for x
    x = 207,908,465,042.81/659,528.28
  6. Step 6: Final answer
    x = 315,238.14

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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.