Home / 306,746.32-422,947.72-209,996.72

Finding the Fourth Proportional to 306,746.32, 422,947.72 and 209,996.72

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Solution

The fourth proportional to 306,746.32, 422,947.72 and 209,996.72 is: 289,547.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,746.32 : 422,947.72 = 209,996.72 : x
  2. Step 2: Convert to fraction form
    306,746.32/422,947.72 = 209,996.72/x
  3. Step 3: Cross multiply
    306,746.32x = 422,947.72 × 209,996.72
  4. Step 4: Simplify right side
    306,746.32x = 88,817,633,931.48
  5. Step 5: Solve for x
    x = 88,817,633,931.48/306,746.32
  6. Step 6: Final answer
    x = 289,547.51

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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.