Home / 342,121,701.51-508,781,509.61-331,225,389.54

Finding the Fourth Proportional to 342,121,701.51, 508,781,509.61 and 331,225,389.54

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Solution

The fourth proportional to 342,121,701.51, 508,781,509.61 and 331,225,389.54 is: 492,577,211.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,121,701.51 : 508,781,509.61 = 331,225,389.54 : x
  2. Step 2: Convert to fraction form
    342,121,701.51/508,781,509.61 = 331,225,389.54/x
  3. Step 3: Cross multiply
    342,121,701.51x = 508,781,509.61 × 331,225,389.54
  4. Step 4: Simplify right side
    342,121,701.51x = 168,521,353,709,665,408
  5. Step 5: Solve for x
    x = 168,521,353,709,665,408/342,121,701.51
  6. Step 6: Final answer
    x = 492,577,211.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.