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Finding the Fourth Proportional to 210,377.79, 315,569.48 and 70,136.46

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Solution

The fourth proportional to 210,377.79, 315,569.48 and 70,136.46 is: 105,205.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,377.79 : 315,569.48 = 70,136.46 : x
  2. Step 2: Convert to fraction form
    210,377.79/315,569.48 = 70,136.46/x
  3. Step 3: Cross multiply
    210,377.79x = 315,569.48 × 70,136.46
  4. Step 4: Simplify right side
    210,377.79x = 22,132,925,860.56
  5. Step 5: Solve for x
    x = 22,132,925,860.56/210,377.79
  6. Step 6: Final answer
    x = 105,205.62

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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.