Home / 211,913.55-292,271.57-139,390.92

Finding the Fourth Proportional to 211,913.55, 292,271.57 and 139,390.92

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Solution

The fourth proportional to 211,913.55, 292,271.57 and 139,390.92 is: 192,248.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,913.55 : 292,271.57 = 139,390.92 : x
  2. Step 2: Convert to fraction form
    211,913.55/292,271.57 = 139,390.92/x
  3. Step 3: Cross multiply
    211,913.55x = 292,271.57 × 139,390.92
  4. Step 4: Simplify right side
    211,913.55x = 40,740,002,335.19
  5. Step 5: Solve for x
    x = 40,740,002,335.19/211,913.55
  6. Step 6: Final answer
    x = 192,248.22

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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.