Home / 285,087,699-393,421,027.82-154,707,507

Finding the Fourth Proportional to 285,087,699, 393,421,027.82 and 154,707,507

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Solution

The fourth proportional to 285,087,699, 393,421,027.82 and 154,707,507 is: 213,496,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,087,699 : 393,421,027.82 = 154,707,507 : x
  2. Step 2: Convert to fraction form
    285,087,699/393,421,027.82 = 154,707,507/x
  3. Step 3: Cross multiply
    285,087,699x = 393,421,027.82 × 154,707,507
  4. Step 4: Simplify right side
    285,087,699x = 60,865,186,415,409,840
  5. Step 5: Solve for x
    x = 60,865,186,415,409,840/285,087,699
  6. Step 6: Final answer
    x = 213,496,361.40

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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.