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Finding the Fourth Proportional to 210,995.68, 316,427.91 and 70,721.50

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Solution

The fourth proportional to 210,995.68, 316,427.91 and 70,721.50 is: 106,060.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,995.68 : 316,427.91 = 70,721.50 : x
  2. Step 2: Convert to fraction form
    210,995.68/316,427.91 = 70,721.50/x
  3. Step 3: Cross multiply
    210,995.68x = 316,427.91 × 70,721.50
  4. Step 4: Simplify right side
    210,995.68x = 22,378,256,437.07
  5. Step 5: Solve for x
    x = 22,378,256,437.07/210,995.68
  6. Step 6: Final answer
    x = 106,060.26

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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.