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Finding the Fourth Proportional to 283,048.83, 390,601.85 and 155,726.55

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Solution

The fourth proportional to 283,048.83, 390,601.85 and 155,726.55 is: 214,899.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,048.83 : 390,601.85 = 155,726.55 : x
  2. Step 2: Convert to fraction form
    283,048.83/390,601.85 = 155,726.55/x
  3. Step 3: Cross multiply
    283,048.83x = 390,601.85 × 155,726.55
  4. Step 4: Simplify right side
    283,048.83x = 60,827,077,745.48
  5. Step 5: Solve for x
    x = 60,827,077,745.48/283,048.83
  6. Step 6: Final answer
    x = 214,899.59

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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.