Home / 215,927.47-297,980.31-120,440.35

Finding the Fourth Proportional to 215,927.47, 297,980.31 and 120,440.35

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Solution

The fourth proportional to 215,927.47, 297,980.31 and 120,440.35 is: 166,207.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,927.47 : 297,980.31 = 120,440.35 : x
  2. Step 2: Convert to fraction form
    215,927.47/297,980.31 = 120,440.35/x
  3. Step 3: Cross multiply
    215,927.47x = 297,980.31 × 120,440.35
  4. Step 4: Simplify right side
    215,927.47x = 35,888,852,829.51
  5. Step 5: Solve for x
    x = 35,888,852,829.51/215,927.47
  6. Step 6: Final answer
    x = 166,207.91

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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.