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Finding the Fourth Proportional to 210,484.51, 315,624.43 and 70,195.75

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Solution

The fourth proportional to 210,484.51, 315,624.43 and 70,195.75 is: 105,259.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,484.51 : 315,624.43 = 70,195.75 : x
  2. Step 2: Convert to fraction form
    210,484.51/315,624.43 = 70,195.75/x
  3. Step 3: Cross multiply
    210,484.51x = 315,624.43 × 70,195.75
  4. Step 4: Simplify right side
    210,484.51x = 22,155,493,582.17
  5. Step 5: Solve for x
    x = 22,155,493,582.17/210,484.51
  6. Step 6: Final answer
    x = 105,259.50

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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.