Home / 353,013.12-487,161-191,868.21

Finding the Fourth Proportional to 353,013.12, 487,161 and 191,868.21

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Solution

The fourth proportional to 353,013.12, 487,161 and 191,868.21 is: 264,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,013.12 : 487,161 = 191,868.21 : x
  2. Step 2: Convert to fraction form
    353,013.12/487,161 = 191,868.21/x
  3. Step 3: Cross multiply
    353,013.12x = 487,161 × 191,868.21
  4. Step 4: Simplify right side
    353,013.12x = 93,470,709,051.81
  5. Step 5: Solve for x
    x = 93,470,709,051.81/353,013.12
  6. Step 6: Final answer
    x = 264,779.70

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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.