Home / 287,393,851.11-396,603,673.12-155,234,847.45

Finding the Fourth Proportional to 287,393,851.11, 396,603,673.12 and 155,234,847.45

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Solution

The fourth proportional to 287,393,851.11, 396,603,673.12 and 155,234,847.45 is: 214,224,175.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,393,851.11 : 396,603,673.12 = 155,234,847.45 : x
  2. Step 2: Convert to fraction form
    287,393,851.11/396,603,673.12 = 155,234,847.45/x
  3. Step 3: Cross multiply
    287,393,851.11x = 396,603,673.12 × 155,234,847.45
  4. Step 4: Simplify right side
    287,393,851.11x = 61,566,710,697,405,296
  5. Step 5: Solve for x
    x = 61,566,710,697,405,296/287,393,851.11
  6. Step 6: Final answer
    x = 214,224,175.15

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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.