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Finding the Fourth Proportional to 249,368.64, 343,900.80 and 194,928

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Solution

The fourth proportional to 249,368.64, 343,900.80 and 194,928 is: 268,822.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,368.64 : 343,900.80 = 194,928 : x
  2. Step 2: Convert to fraction form
    249,368.64/343,900.80 = 194,928/x
  3. Step 3: Cross multiply
    249,368.64x = 343,900.80 × 194,928
  4. Step 4: Simplify right side
    249,368.64x = 67,035,895,142.40
  5. Step 5: Solve for x
    x = 67,035,895,142.40/249,368.64
  6. Step 6: Final answer
    x = 268,822.48

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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.