Home / 387,903,607.95-535,318,317.14-211,702,911.78

Finding the Fourth Proportional to 387,903,607.95, 535,318,317.14 and 211,702,911.78

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Solution

The fourth proportional to 387,903,607.95, 535,318,317.14 and 211,702,911.78 is: 292,156,206.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,903,607.95 : 535,318,317.14 = 211,702,911.78 : x
  2. Step 2: Convert to fraction form
    387,903,607.95/535,318,317.14 = 211,702,911.78/x
  3. Step 3: Cross multiply
    387,903,607.95x = 535,318,317.14 × 211,702,911.78
  4. Step 4: Simplify right side
    387,903,607.95x = 113,328,446,466,648,960
  5. Step 5: Solve for x
    x = 113,328,446,466,648,960/387,903,607.95
  6. Step 6: Final answer
    x = 292,156,206.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.