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Finding the Fourth Proportional to 210,045.28, 314,962.80 and 69,754.72

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Solution

The fourth proportional to 210,045.28, 314,962.80 and 69,754.72 is: 104,597.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,045.28 : 314,962.80 = 69,754.72 : x
  2. Step 2: Convert to fraction form
    210,045.28/314,962.80 = 69,754.72/x
  3. Step 3: Cross multiply
    210,045.28x = 314,962.80 × 69,754.72
  4. Step 4: Simplify right side
    210,045.28x = 21,970,141,924.42
  5. Step 5: Solve for x
    x = 21,970,141,924.42/210,045.28
  6. Step 6: Final answer
    x = 104,597.17

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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.