Home / 312,225.50-430,870.38-168,985.55

Finding the Fourth Proportional to 312,225.50, 430,870.38 and 168,985.55

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Solution

The fourth proportional to 312,225.50, 430,870.38 and 168,985.55 is: 233,199.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,225.50 : 430,870.38 = 168,985.55 : x
  2. Step 2: Convert to fraction form
    312,225.50/430,870.38 = 168,985.55/x
  3. Step 3: Cross multiply
    312,225.50x = 430,870.38 × 168,985.55
  4. Step 4: Simplify right side
    312,225.50x = 72,810,868,143.01
  5. Step 5: Solve for x
    x = 72,810,868,143.01/312,225.50
  6. Step 6: Final answer
    x = 233,199.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.