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Finding the Fourth Proportional to 310,289.59, 465,461.10 and 85,650.07

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Solution

The fourth proportional to 310,289.59, 465,461.10 and 85,650.07 is: 128,482.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,289.59 : 465,461.10 = 85,650.07 : x
  2. Step 2: Convert to fraction form
    310,289.59/465,461.10 = 85,650.07/x
  3. Step 3: Cross multiply
    310,289.59x = 465,461.10 × 85,650.07
  4. Step 4: Simplify right side
    310,289.59x = 39,866,775,797.28
  5. Step 5: Solve for x
    x = 39,866,775,797.28/310,289.59
  6. Step 6: Final answer
    x = 128,482.48

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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.