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Finding the Fourth Proportional to 210,622.52, 315,950.12 and 70,381.64

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Solution

The fourth proportional to 210,622.52, 315,950.12 and 70,381.64 is: 105,577.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,622.52 : 315,950.12 = 70,381.64 : x
  2. Step 2: Convert to fraction form
    210,622.52/315,950.12 = 70,381.64/x
  3. Step 3: Cross multiply
    210,622.52x = 315,950.12 × 70,381.64
  4. Step 4: Simplify right side
    210,622.52x = 22,237,087,603.80
  5. Step 5: Solve for x
    x = 22,237,087,603.80/210,622.52
  6. Step 6: Final answer
    x = 105,577.92

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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.