Home / 421,308,045.90-631,962,068.85-217,234,701.90

Finding the Fourth Proportional to 421,308,045.90, 631,962,068.85 and 217,234,701.90

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Solution

The fourth proportional to 421,308,045.90, 631,962,068.85 and 217,234,701.90 is: 325,852,052.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,308,045.90 : 631,962,068.85 = 217,234,701.90 : x
  2. Step 2: Convert to fraction form
    421,308,045.90/631,962,068.85 = 217,234,701.90/x
  3. Step 3: Cross multiply
    421,308,045.90x = 631,962,068.85 × 217,234,701.90
  4. Step 4: Simplify right side
    421,308,045.90x = 137,284,091,638,737,040
  5. Step 5: Solve for x
    x = 137,284,091,638,737,040/421,308,045.90
  6. Step 6: Final answer
    x = 325,852,052.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.