Home / 219,238,975.40-328,858,463.10-128,465,061.80

Finding the Fourth Proportional to 219,238,975.40, 328,858,463.10 and 128,465,061.80

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Solution

The fourth proportional to 219,238,975.40, 328,858,463.10 and 128,465,061.80 is: 192,697,592.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,238,975.40 : 328,858,463.10 = 128,465,061.80 : x
  2. Step 2: Convert to fraction form
    219,238,975.40/328,858,463.10 = 128,465,061.80/x
  3. Step 3: Cross multiply
    219,238,975.40x = 328,858,463.10 × 128,465,061.80
  4. Step 4: Simplify right side
    219,238,975.40x = 42,246,822,785,594,520
  5. Step 5: Solve for x
    x = 42,246,822,785,594,520/219,238,975.40
  6. Step 6: Final answer
    x = 192,697,592.70

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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.