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Finding the Fourth Proportional to 485,129.36, 669,461.64 and 270,258.32

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Solution

The fourth proportional to 485,129.36, 669,461.64 and 270,258.32 is: 372,947.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,129.36 : 669,461.64 = 270,258.32 : x
  2. Step 2: Convert to fraction form
    485,129.36/669,461.64 = 270,258.32/x
  3. Step 3: Cross multiply
    485,129.36x = 669,461.64 × 270,258.32
  4. Step 4: Simplify right side
    485,129.36x = 180,927,578,130.85
  5. Step 5: Solve for x
    x = 180,927,578,130.85/485,129.36
  6. Step 6: Final answer
    x = 372,947.08

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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.