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Finding the Fourth Proportional to 472,974.75, 652,718.93 and 258,128.55

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Solution

The fourth proportional to 472,974.75, 652,718.93 and 258,128.55 is: 356,224.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,974.75 : 652,718.93 = 258,128.55 : x
  2. Step 2: Convert to fraction form
    472,974.75/652,718.93 = 258,128.55/x
  3. Step 3: Cross multiply
    472,974.75x = 652,718.93 × 258,128.55
  4. Step 4: Simplify right side
    472,974.75x = 168,485,389,667.81
  5. Step 5: Solve for x
    x = 168,485,389,667.81/472,974.75
  6. Step 6: Final answer
    x = 356,224.91

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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.