Home / 287,156,836.40-430,735,254.60-280,779,544.40

Finding the Fourth Proportional to 287,156,836.40, 430,735,254.60 and 280,779,544.40

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Solution

The fourth proportional to 287,156,836.40, 430,735,254.60 and 280,779,544.40 is: 421,169,316.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,156,836.40 : 430,735,254.60 = 280,779,544.40 : x
  2. Step 2: Convert to fraction form
    287,156,836.40/430,735,254.60 = 280,779,544.40/x
  3. Step 3: Cross multiply
    287,156,836.40x = 430,735,254.60 × 280,779,544.40
  4. Step 4: Simplify right side
    287,156,836.40x = 120,941,648,543,606,000
  5. Step 5: Solve for x
    x = 120,941,648,543,606,000/287,156,836.40
  6. Step 6: Final answer
    x = 421,169,316.60

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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.