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Finding the Fourth Proportional to 251,064.36, 346,485.78 and 137,888.28

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Solution

The fourth proportional to 251,064.36, 346,485.78 and 137,888.28 is: 190,295.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,064.36 : 346,485.78 = 137,888.28 : x
  2. Step 2: Convert to fraction form
    251,064.36/346,485.78 = 137,888.28/x
  3. Step 3: Cross multiply
    251,064.36x = 346,485.78 × 137,888.28
  4. Step 4: Simplify right side
    251,064.36x = 47,776,328,248.66
  5. Step 5: Solve for x
    x = 47,776,328,248.66/251,064.36
  6. Step 6: Final answer
    x = 190,295.14

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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.