Home / 224,217.93-309,420.57-128,730.45

Finding the Fourth Proportional to 224,217.93, 309,420.57 and 128,730.45

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Solution

The fourth proportional to 224,217.93, 309,420.57 and 128,730.45 is: 177,647.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,217.93 : 309,420.57 = 128,730.45 : x
  2. Step 2: Convert to fraction form
    224,217.93/309,420.57 = 128,730.45/x
  3. Step 3: Cross multiply
    224,217.93x = 309,420.57 × 128,730.45
  4. Step 4: Simplify right side
    224,217.93x = 39,831,849,215.36
  5. Step 5: Solve for x
    x = 39,831,849,215.36/224,217.93
  6. Step 6: Final answer
    x = 177,647.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.