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Finding the Fourth Proportional to 210,399.54, 315,602.01 and 70,158.12

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Solution

The fourth proportional to 210,399.54, 315,602.01 and 70,158.12 is: 105,238.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,399.54 : 315,602.01 = 70,158.12 : x
  2. Step 2: Convert to fraction form
    210,399.54/315,602.01 = 70,158.12/x
  3. Step 3: Cross multiply
    210,399.54x = 315,602.01 × 70,158.12
  4. Step 4: Simplify right side
    210,399.54x = 22,142,043,689.82
  5. Step 5: Solve for x
    x = 22,142,043,689.82/210,399.54
  6. Step 6: Final answer
    x = 105,238.08

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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.