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Finding the Fourth Proportional to 219,891.40, 303,482.76 and 139,326.47

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Solution

The fourth proportional to 219,891.40, 303,482.76 and 139,326.47 is: 192,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,891.40 : 303,482.76 = 139,326.47 : x
  2. Step 2: Convert to fraction form
    219,891.40/303,482.76 = 139,326.47/x
  3. Step 3: Cross multiply
    219,891.40x = 303,482.76 × 139,326.47
  4. Step 4: Simplify right side
    219,891.40x = 42,283,181,656.66
  5. Step 5: Solve for x
    x = 42,283,181,656.66/219,891.40
  6. Step 6: Final answer
    x = 192,291.20

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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.