Home / 358,692,153.20-538,132,708.20-128,637,249.20

Finding the Fourth Proportional to 358,692,153.20, 538,132,708.20 and 128,637,249.20

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Solution

The fourth proportional to 358,692,153.20, 538,132,708.20 and 128,637,249.20 is: 192,989,756.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,692,153.20 : 538,132,708.20 = 128,637,249.20 : x
  2. Step 2: Convert to fraction form
    358,692,153.20/538,132,708.20 = 128,637,249.20/x
  3. Step 3: Cross multiply
    358,692,153.20x = 538,132,708.20 × 128,637,249.20
  4. Step 4: Simplify right side
    358,692,153.20x = 69,223,911,287,394,288
  5. Step 5: Solve for x
    x = 69,223,911,287,394,288/358,692,153.20
  6. Step 6: Final answer
    x = 192,989,756.45

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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.