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Finding the Fourth Proportional to 286,383.60, 428,554.80 and 249,350.40

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Solution

The fourth proportional to 286,383.60, 428,554.80 and 249,350.40 is: 373,136.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,383.60 : 428,554.80 = 249,350.40 : x
  2. Step 2: Convert to fraction form
    286,383.60/428,554.80 = 249,350.40/x
  3. Step 3: Cross multiply
    286,383.60x = 428,554.80 × 249,350.40
  4. Step 4: Simplify right side
    286,383.60x = 106,860,310,801.92
  5. Step 5: Solve for x
    x = 106,860,310,801.92/286,383.60
  6. Step 6: Final answer
    x = 373,136.98

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1.5x scale

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.