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Finding the Fourth Proportional to 286,590.60, 428,865.30 and 249,557.40

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Solution

The fourth proportional to 286,590.60, 428,865.30 and 249,557.40 is: 373,447.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,590.60 : 428,865.30 = 249,557.40 : x
  2. Step 2: Convert to fraction form
    286,590.60/428,865.30 = 249,557.40/x
  3. Step 3: Cross multiply
    286,590.60x = 428,865.30 × 249,557.40
  4. Step 4: Simplify right side
    286,590.60x = 107,026,509,218.22
  5. Step 5: Solve for x
    x = 107,026,509,218.22/286,590.60
  6. Step 6: Final answer
    x = 373,447.38

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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.