Home / 369,721.12-510,215.16-199,955.20

Finding the Fourth Proportional to 369,721.12, 510,215.16 and 199,955.20

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Solution

The fourth proportional to 369,721.12, 510,215.16 and 199,955.20 is: 275,938.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,721.12 : 510,215.16 = 199,955.20 : x
  2. Step 2: Convert to fraction form
    369,721.12/510,215.16 = 199,955.20/x
  3. Step 3: Cross multiply
    369,721.12x = 510,215.16 × 199,955.20
  4. Step 4: Simplify right side
    369,721.12x = 102,020,174,360.83
  5. Step 5: Solve for x
    x = 102,020,174,360.83/369,721.12
  6. Step 6: Final answer
    x = 275,938.18

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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.