Home / 280,499.02-387,088.30-165,819

Finding the Fourth Proportional to 280,499.02, 387,088.30 and 165,819

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Solution

The fourth proportional to 280,499.02, 387,088.30 and 165,819 is: 228,830.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,499.02 : 387,088.30 = 165,819 : x
  2. Step 2: Convert to fraction form
    280,499.02/387,088.30 = 165,819/x
  3. Step 3: Cross multiply
    280,499.02x = 387,088.30 × 165,819
  4. Step 4: Simplify right side
    280,499.02x = 64,186,594,817.70
  5. Step 5: Solve for x
    x = 64,186,594,817.70/280,499.02
  6. Step 6: Final answer
    x = 228,830.01

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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.