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Finding the Fourth Proportional to 287,237.60, 430,856.40 and 262,354.40

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Solution

The fourth proportional to 287,237.60, 430,856.40 and 262,354.40 is: 393,531.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,237.60 : 430,856.40 = 262,354.40 : x
  2. Step 2: Convert to fraction form
    287,237.60/430,856.40 = 262,354.40/x
  3. Step 3: Cross multiply
    287,237.60x = 430,856.40 × 262,354.40
  4. Step 4: Simplify right side
    287,237.60x = 113,037,072,308.16
  5. Step 5: Solve for x
    x = 113,037,072,308.16/287,237.60
  6. Step 6: Final answer
    x = 393,531.60

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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.