Home / 209,432.18-311,779.53-208,186.62

Finding the Fourth Proportional to 209,432.18, 311,779.53 and 208,186.62

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Solution

The fourth proportional to 209,432.18, 311,779.53 and 208,186.62 is: 309,925.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,432.18 : 311,779.53 = 208,186.62 : x
  2. Step 2: Convert to fraction form
    209,432.18/311,779.53 = 208,186.62/x
  3. Step 3: Cross multiply
    209,432.18x = 311,779.53 × 208,186.62
  4. Step 4: Simplify right side
    209,432.18x = 64,908,326,535.89
  5. Step 5: Solve for x
    x = 64,908,326,535.89/209,432.18
  6. Step 6: Final answer
    x = 309,925.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.