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Finding the Fourth Proportional to 210,088.16, 315,063.84 and 69,809.12

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Solution

The fourth proportional to 210,088.16, 315,063.84 and 69,809.12 is: 104,690.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,088.16 : 315,063.84 = 69,809.12 : x
  2. Step 2: Convert to fraction form
    210,088.16/315,063.84 = 69,809.12/x
  3. Step 3: Cross multiply
    210,088.16x = 315,063.84 × 69,809.12
  4. Step 4: Simplify right side
    210,088.16x = 21,994,329,414.22
  5. Step 5: Solve for x
    x = 21,994,329,414.22/210,088.16
  6. Step 6: Final answer
    x = 104,690.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.