Home / 287,779.02-397,385.78-180,533.40

Finding the Fourth Proportional to 287,779.02, 397,385.78 and 180,533.40

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Solution

The fourth proportional to 287,779.02, 397,385.78 and 180,533.40 is: 249,293.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,779.02 : 397,385.78 = 180,533.40 : x
  2. Step 2: Convert to fraction form
    287,779.02/397,385.78 = 180,533.40/x
  3. Step 3: Cross multiply
    287,779.02x = 397,385.78 × 180,533.40
  4. Step 4: Simplify right side
    287,779.02x = 71,741,405,072.39
  5. Step 5: Solve for x
    x = 71,741,405,072.39/287,779.02
  6. Step 6: Final answer
    x = 249,293.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.