Home / 210,856.64-291,077.28-134,478.32

Finding the Fourth Proportional to 210,856.64, 291,077.28 and 134,478.32

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Solution

The fourth proportional to 210,856.64, 291,077.28 and 134,478.32 is: 185,640.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,856.64 : 291,077.28 = 134,478.32 : x
  2. Step 2: Convert to fraction form
    210,856.64/291,077.28 = 134,478.32/x
  3. Step 3: Cross multiply
    210,856.64x = 291,077.28 × 134,478.32
  4. Step 4: Simplify right side
    210,856.64x = 39,143,583,604.57
  5. Step 5: Solve for x
    x = 39,143,583,604.57/210,856.64
  6. Step 6: Final answer
    x = 185,640.74

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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.