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Finding the Fourth Proportional to 342,726.36, 473,613 and 257,695.80

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Solution

The fourth proportional to 342,726.36, 473,613 and 257,695.80 is: 356,109.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,726.36 : 473,613 = 257,695.80 : x
  2. Step 2: Convert to fraction form
    342,726.36/473,613 = 257,695.80/x
  3. Step 3: Cross multiply
    342,726.36x = 473,613 × 257,695.80
  4. Step 4: Simplify right side
    342,726.36x = 122,048,080,925.40
  5. Step 5: Solve for x
    x = 122,048,080,925.40/342,726.36
  6. Step 6: Final answer
    x = 356,109.41

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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.