Home / 257,501.07-355,345.11-142,780.19

Finding the Fourth Proportional to 257,501.07, 355,345.11 and 142,780.19

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Solution

The fourth proportional to 257,501.07, 355,345.11 and 142,780.19 is: 197,033.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,501.07 : 355,345.11 = 142,780.19 : x
  2. Step 2: Convert to fraction form
    257,501.07/355,345.11 = 142,780.19/x
  3. Step 3: Cross multiply
    257,501.07x = 355,345.11 × 142,780.19
  4. Step 4: Simplify right side
    257,501.07x = 50,736,240,544.65
  5. Step 5: Solve for x
    x = 50,736,240,544.65/257,501.07
  6. Step 6: Final answer
    x = 197,033.13

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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.