Home / 259,017,865.20-388,477,031.40-77,270,972.40

Finding the Fourth Proportional to 259,017,865.20, 388,477,031.40 and 77,270,972.40

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Solution

The fourth proportional to 259,017,865.20, 388,477,031.40 and 77,270,972.40 is: 115,891,612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,017,865.20 : 388,477,031.40 = 77,270,972.40 : x
  2. Step 2: Convert to fraction form
    259,017,865.20/388,477,031.40 = 77,270,972.40/x
  3. Step 3: Cross multiply
    259,017,865.20x = 388,477,031.40 × 77,270,972.40
  4. Step 4: Simplify right side
    259,017,865.20x = 30,017,997,971,343,332
  5. Step 5: Solve for x
    x = 30,017,997,971,343,332/259,017,865.20
  6. Step 6: Final answer
    x = 115,891,612.14

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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.