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Finding the Fourth Proportional to 208,368.59, 287,549.54 and 112,875.29

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Solution

The fourth proportional to 208,368.59, 287,549.54 and 112,875.29 is: 155,768.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,368.59 : 287,549.54 = 112,875.29 : x
  2. Step 2: Convert to fraction form
    208,368.59/287,549.54 = 112,875.29/x
  3. Step 3: Cross multiply
    208,368.59x = 287,549.54 × 112,875.29
  4. Step 4: Simplify right side
    208,368.59x = 32,457,237,216.34
  5. Step 5: Solve for x
    x = 32,457,237,216.34/208,368.59
  6. Step 6: Final answer
    x = 155,768.38

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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.