Home / 310,298.19-465,438.03-85,672.35

Finding the Fourth Proportional to 310,298.19, 465,438.03 and 85,672.35

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Solution

The fourth proportional to 310,298.19, 465,438.03 and 85,672.35 is: 128,505.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,298.19 : 465,438.03 = 85,672.35 : x
  2. Step 2: Convert to fraction form
    310,298.19/465,438.03 = 85,672.35/x
  3. Step 3: Cross multiply
    310,298.19x = 465,438.03 × 85,672.35
  4. Step 4: Simplify right side
    310,298.19x = 39,875,169,809.47
  5. Step 5: Solve for x
    x = 39,875,169,809.47/310,298.19
  6. Step 6: Final answer
    x = 128,505.97

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1.5x scale

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.