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Finding the Fourth Proportional to 210,457.44, 315,702.54 and 70,215.96

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Solution

The fourth proportional to 210,457.44, 315,702.54 and 70,215.96 is: 105,329.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,457.44 : 315,702.54 = 70,215.96 : x
  2. Step 2: Convert to fraction form
    210,457.44/315,702.54 = 70,215.96/x
  3. Step 3: Cross multiply
    210,457.44x = 315,702.54 × 70,215.96
  4. Step 4: Simplify right side
    210,457.44x = 22,167,356,920.54
  5. Step 5: Solve for x
    x = 22,167,356,920.54/210,457.44
  6. Step 6: Final answer
    x = 105,329.40

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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.