Home / 216,439,820.15-298,678,946.86-117,318,439.34

Finding the Fourth Proportional to 216,439,820.15, 298,678,946.86 and 117,318,439.34

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Solution

The fourth proportional to 216,439,820.15, 298,678,946.86 and 117,318,439.34 is: 161,895,107.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,439,820.15 : 298,678,946.86 = 117,318,439.34 : x
  2. Step 2: Convert to fraction form
    216,439,820.15/298,678,946.86 = 117,318,439.34/x
  3. Step 3: Cross multiply
    216,439,820.15x = 298,678,946.86 × 117,318,439.34
  4. Step 4: Simplify right side
    216,439,820.15x = 35,040,547,910,126,700
  5. Step 5: Solve for x
    x = 35,040,547,910,126,700/216,439,820.15
  6. Step 6: Final answer
    x = 161,895,107.32

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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.