Home / 281,581,985.85-388,583,977.47-156,143,018.77

Finding the Fourth Proportional to 281,581,985.85, 388,583,977.47 and 156,143,018.77

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Solution

The fourth proportional to 281,581,985.85, 388,583,977.47 and 156,143,018.77 is: 215,477,830.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,581,985.85 : 388,583,977.47 = 156,143,018.77 : x
  2. Step 2: Convert to fraction form
    281,581,985.85/388,583,977.47 = 156,143,018.77/x
  3. Step 3: Cross multiply
    281,581,985.85x = 388,583,977.47 × 156,143,018.77
  4. Step 4: Simplify right side
    281,581,985.85x = 60,674,675,287,819,472
  5. Step 5: Solve for x
    x = 60,674,675,287,819,472/281,581,985.85
  6. Step 6: Final answer
    x = 215,477,830.03

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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.