Home / 319,985.64-480,006.02-83,328.75

Finding the Fourth Proportional to 319,985.64, 480,006.02 and 83,328.75

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Solution

The fourth proportional to 319,985.64, 480,006.02 and 83,328.75 is: 125,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,985.64 : 480,006.02 = 83,328.75 : x
  2. Step 2: Convert to fraction form
    319,985.64/480,006.02 = 83,328.75/x
  3. Step 3: Cross multiply
    319,985.64x = 480,006.02 × 83,328.75
  4. Step 4: Simplify right side
    319,985.64x = 39,998,301,639.08
  5. Step 5: Solve for x
    x = 39,998,301,639.08/319,985.64
  6. Step 6: Final answer
    x = 125,000.30

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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.