Home / 285,087,693.98-393,421,020.90-154,707,501.98

Finding the Fourth Proportional to 285,087,693.98, 393,421,020.90 and 154,707,501.98

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Solution

The fourth proportional to 285,087,693.98, 393,421,020.90 and 154,707,501.98 is: 213,496,354.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,087,693.98 : 393,421,020.90 = 154,707,501.98 : x
  2. Step 2: Convert to fraction form
    285,087,693.98/393,421,020.90 = 154,707,501.98/x
  3. Step 3: Cross multiply
    285,087,693.98x = 393,421,020.90 × 154,707,501.98
  4. Step 4: Simplify right side
    285,087,693.98x = 60,865,183,369,860,360
  5. Step 5: Solve for x
    x = 60,865,183,369,860,360/285,087,693.98
  6. Step 6: Final answer
    x = 213,496,354.47

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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.