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Finding the Fourth Proportional to 342,176.02, 472,045.95 and 221,356.28

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Solution

The fourth proportional to 342,176.02, 472,045.95 and 221,356.28 is: 305,370.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,176.02 : 472,045.95 = 221,356.28 : x
  2. Step 2: Convert to fraction form
    342,176.02/472,045.95 = 221,356.28/x
  3. Step 3: Cross multiply
    342,176.02x = 472,045.95 × 221,356.28
  4. Step 4: Simplify right side
    342,176.02x = 104,490,336,661.18
  5. Step 5: Solve for x
    x = 104,490,336,661.18/342,176.02
  6. Step 6: Final answer
    x = 305,370.14

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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.