Home / 313,869.40-470,112.90-272,397.40

Finding the Fourth Proportional to 313,869.40, 470,112.90 and 272,397.40

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Solution

The fourth proportional to 313,869.40, 470,112.90 and 272,397.40 is: 407,996.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,869.40 : 470,112.90 = 272,397.40 : x
  2. Step 2: Convert to fraction form
    313,869.40/470,112.90 = 272,397.40/x
  3. Step 3: Cross multiply
    313,869.40x = 470,112.90 × 272,397.40
  4. Step 4: Simplify right side
    313,869.40x = 128,057,531,666.46
  5. Step 5: Solve for x
    x = 128,057,531,666.46/313,869.40
  6. Step 6: Final answer
    x = 407,996.23

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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.