Home / 310,291,985.10-465,400,652.85-128,520,209.10

Finding the Fourth Proportional to 310,291,985.10, 465,400,652.85 and 128,520,209.10

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Solution

The fourth proportional to 310,291,985.10, 465,400,652.85 and 128,520,209.10 is: 192,764,854.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,291,985.10 : 465,400,652.85 = 128,520,209.10 : x
  2. Step 2: Convert to fraction form
    310,291,985.10/465,400,652.85 = 128,520,209.10/x
  3. Step 3: Cross multiply
    310,291,985.10x = 465,400,652.85 × 128,520,209.10
  4. Step 4: Simplify right side
    310,291,985.10x = 59,813,389,219,558,512
  5. Step 5: Solve for x
    x = 59,813,389,219,558,512/310,291,985.10
  6. Step 6: Final answer
    x = 192,764,854.05

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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.