Home / 197,274.96-272,360.88-128,430.36

Finding the Fourth Proportional to 197,274.96, 272,360.88 and 128,430.36

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Solution

The fourth proportional to 197,274.96, 272,360.88 and 128,430.36 is: 177,312.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,274.96 : 272,360.88 = 128,430.36 : x
  2. Step 2: Convert to fraction form
    197,274.96/272,360.88 = 128,430.36/x
  3. Step 3: Cross multiply
    197,274.96x = 272,360.88 × 128,430.36
  4. Step 4: Simplify right side
    197,274.96x = 34,979,405,868.32
  5. Step 5: Solve for x
    x = 34,979,405,868.32/197,274.96
  6. Step 6: Final answer
    x = 177,312.95

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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.