Home / 212,487.45-318,754.59-70,280.94

Finding the Fourth Proportional to 212,487.45, 318,754.59 and 70,280.94

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Solution

The fourth proportional to 212,487.45, 318,754.59 and 70,280.94 is: 105,429.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,487.45 : 318,754.59 = 70,280.94 : x
  2. Step 2: Convert to fraction form
    212,487.45/318,754.59 = 70,280.94/x
  3. Step 3: Cross multiply
    212,487.45x = 318,754.59 × 70,280.94
  4. Step 4: Simplify right side
    212,487.45x = 22,402,372,214.51
  5. Step 5: Solve for x
    x = 22,402,372,214.51/212,487.45
  6. Step 6: Final answer
    x = 105,429.15

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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.