Home / 380,976,279.34-571,521,204.47-135,312,275.20

Finding the Fourth Proportional to 380,976,279.34, 571,521,204.47 and 135,312,275.20

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Solution

The fourth proportional to 380,976,279.34, 571,521,204.47 and 135,312,275.20 is: 202,988,581.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,976,279.34 : 571,521,204.47 = 135,312,275.20 : x
  2. Step 2: Convert to fraction form
    380,976,279.34/571,521,204.47 = 135,312,275.20/x
  3. Step 3: Cross multiply
    380,976,279.34x = 571,521,204.47 × 135,312,275.20
  4. Step 4: Simplify right side
    380,976,279.34x = 77,333,834,501,880,112
  5. Step 5: Solve for x
    x = 77,333,834,501,880,112/380,976,279.34
  6. Step 6: Final answer
    x = 202,988,581.43

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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.