Home / 208,013,312.40-312,019,968.60-100,517,888.40

Finding the Fourth Proportional to 208,013,312.40, 312,019,968.60 and 100,517,888.40

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Solution

The fourth proportional to 208,013,312.40, 312,019,968.60 and 100,517,888.40 is: 150,776,832.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,013,312.40 : 312,019,968.60 = 100,517,888.40 : x
  2. Step 2: Convert to fraction form
    208,013,312.40/312,019,968.60 = 100,517,888.40/x
  3. Step 3: Cross multiply
    208,013,312.40x = 312,019,968.60 × 100,517,888.40
  4. Step 4: Simplify right side
    208,013,312.40x = 31,363,588,382,306,308
  5. Step 5: Solve for x
    x = 31,363,588,382,306,308/208,013,312.40
  6. Step 6: Final answer
    x = 150,776,832.60

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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.