Home / 328,547.02-492,824.45-128,961.40

Finding the Fourth Proportional to 328,547.02, 492,824.45 and 128,961.40

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Solution

The fourth proportional to 328,547.02, 492,824.45 and 128,961.40 is: 193,443.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,547.02 : 492,824.45 = 128,961.40 : x
  2. Step 2: Convert to fraction form
    328,547.02/492,824.45 = 128,961.40/x
  3. Step 3: Cross multiply
    328,547.02x = 492,824.45 × 128,961.40
  4. Step 4: Simplify right side
    328,547.02x = 63,555,331,026.23
  5. Step 5: Solve for x
    x = 63,555,331,026.23/328,547.02
  6. Step 6: Final answer
    x = 193,443.64

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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.