Home / 238,790,856.80-358,097,811.60-77,238,063.20

Finding the Fourth Proportional to 238,790,856.80, 358,097,811.60 and 77,238,063.20

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Solution

The fourth proportional to 238,790,856.80, 358,097,811.60 and 77,238,063.20 is: 115,828,477.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,790,856.80 : 358,097,811.60 = 77,238,063.20 : x
  2. Step 2: Convert to fraction form
    238,790,856.80/358,097,811.60 = 77,238,063.20/x
  3. Step 3: Cross multiply
    238,790,856.80x = 358,097,811.60 × 77,238,063.20
  4. Step 4: Simplify right side
    238,790,856.80x = 27,658,781,404,142,496
  5. Step 5: Solve for x
    x = 27,658,781,404,142,496/238,790,856.80
  6. Step 6: Final answer
    x = 115,828,477.58

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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.