Home / 328,259.05-492,191.47-128,341.06

Finding the Fourth Proportional to 328,259.05, 492,191.47 and 128,341.06

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Solution

The fourth proportional to 328,259.05, 492,191.47 and 128,341.06 is: 192,434.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,259.05 : 492,191.47 = 128,341.06 : x
  2. Step 2: Convert to fraction form
    328,259.05/492,191.47 = 128,341.06/x
  3. Step 3: Cross multiply
    328,259.05x = 492,191.47 × 128,341.06
  4. Step 4: Simplify right side
    328,259.05x = 63,168,374,982.76
  5. Step 5: Solve for x
    x = 63,168,374,982.76/328,259.05
  6. Step 6: Final answer
    x = 192,434.53

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1.5x scale

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.