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Finding the Fourth Proportional to 208,482.40, 287,706.22 and 112,989.07

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Solution

The fourth proportional to 208,482.40, 287,706.22 and 112,989.07 is: 155,925.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,482.40 : 287,706.22 = 112,989.07 : x
  2. Step 2: Convert to fraction form
    208,482.40/287,706.22 = 112,989.07/x
  3. Step 3: Cross multiply
    208,482.40x = 287,706.22 × 112,989.07
  4. Step 4: Simplify right side
    208,482.40x = 32,507,658,308.18
  5. Step 5: Solve for x
    x = 32,507,658,308.18/208,482.40
  6. Step 6: Final answer
    x = 155,925.19

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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.