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Finding the Fourth Proportional to 310,587.99, 465,892.34 and 85,929.60

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Solution

The fourth proportional to 310,587.99, 465,892.34 and 85,929.60 is: 128,897.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,587.99 : 465,892.34 = 85,929.60 : x
  2. Step 2: Convert to fraction form
    310,587.99/465,892.34 = 85,929.60/x
  3. Step 3: Cross multiply
    310,587.99x = 465,892.34 × 85,929.60
  4. Step 4: Simplify right side
    310,587.99x = 40,033,942,419.26
  5. Step 5: Solve for x
    x = 40,033,942,419.26/310,587.99
  6. Step 6: Final answer
    x = 128,897.26

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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.