Home / 208,018,328.80-311,803,544.40-78,575,922.40

Finding the Fourth Proportional to 208,018,328.80, 311,803,544.40 and 78,575,922.40

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Solution

The fourth proportional to 208,018,328.80, 311,803,544.40 and 78,575,922.40 is: 117,779,290.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,018,328.80 : 311,803,544.40 = 78,575,922.40 : x
  2. Step 2: Convert to fraction form
    208,018,328.80/311,803,544.40 = 78,575,922.40/x
  3. Step 3: Cross multiply
    208,018,328.80x = 311,803,544.40 × 78,575,922.40
  4. Step 4: Simplify right side
    208,018,328.80x = 24,500,251,108,819,356
  5. Step 5: Solve for x
    x = 24,500,251,108,819,356/208,018,328.80
  6. Step 6: Final answer
    x = 117,779,290.17

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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.