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Finding the Fourth Proportional to 315,504.18, 435,344.42 and 186,424.71

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Solution

The fourth proportional to 315,504.18, 435,344.42 and 186,424.71 is: 257,235.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,504.18 : 435,344.42 = 186,424.71 : x
  2. Step 2: Convert to fraction form
    315,504.18/435,344.42 = 186,424.71/x
  3. Step 3: Cross multiply
    315,504.18x = 435,344.42 × 186,424.71
  4. Step 4: Simplify right side
    315,504.18x = 81,158,954,139.77
  5. Step 5: Solve for x
    x = 81,158,954,139.77/315,504.18
  6. Step 6: Final answer
    x = 257,235.75

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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.