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Finding the Fourth Proportional to 472,721.32, 652,359.58 and 257,862.34

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Solution

The fourth proportional to 472,721.32, 652,359.58 and 257,862.34 is: 355,852.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,721.32 : 652,359.58 = 257,862.34 : x
  2. Step 2: Convert to fraction form
    472,721.32/652,359.58 = 257,862.34/x
  3. Step 3: Cross multiply
    472,721.32x = 652,359.58 × 257,862.34
  4. Step 4: Simplify right side
    472,721.32x = 168,218,967,820.22
  5. Step 5: Solve for x
    x = 168,218,967,820.22/472,721.32
  6. Step 6: Final answer
    x = 355,852.30

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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.