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Finding the Fourth Proportional to 286,564.60, 428,826.30 and 249,531.40

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Solution

The fourth proportional to 286,564.60, 428,826.30 and 249,531.40 is: 373,408.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,564.60 : 428,826.30 = 249,531.40 : x
  2. Step 2: Convert to fraction form
    286,564.60/428,826.30 = 249,531.40/x
  3. Step 3: Cross multiply
    286,564.60x = 428,826.30 × 249,531.40
  4. Step 4: Simplify right side
    286,564.60x = 107,005,626,995.82
  5. Step 5: Solve for x
    x = 107,005,626,995.82/286,564.60
  6. Step 6: Final answer
    x = 373,408.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.