Home / 402,999.34-556,139.08-221,707.38

Finding the Fourth Proportional to 402,999.34, 556,139.08 and 221,707.38

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Solution

The fourth proportional to 402,999.34, 556,139.08 and 221,707.38 is: 305,956.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,999.34 : 556,139.08 = 221,707.38 : x
  2. Step 2: Convert to fraction form
    402,999.34/556,139.08 = 221,707.38/x
  3. Step 3: Cross multiply
    402,999.34x = 556,139.08 × 221,707.38
  4. Step 4: Simplify right side
    402,999.34x = 123,300,138,342.41
  5. Step 5: Solve for x
    x = 123,300,138,342.41/402,999.34
  6. Step 6: Final answer
    x = 305,956.18

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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.