Home / 647,746.16-971,591.70-221,320.22

Finding the Fourth Proportional to 647,746.16, 971,591.70 and 221,320.22

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Solution

The fourth proportional to 647,746.16, 971,591.70 and 221,320.22 is: 331,970.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,746.16 : 971,591.70 = 221,320.22 : x
  2. Step 2: Convert to fraction form
    647,746.16/971,591.70 = 221,320.22/x
  3. Step 3: Cross multiply
    647,746.16x = 971,591.70 × 221,320.22
  4. Step 4: Simplify right side
    647,746.16x = 215,032,888,794.17
  5. Step 5: Solve for x
    x = 215,032,888,794.17/647,746.16
  6. Step 6: Final answer
    x = 331,970.92

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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.