Home / 208,013,754.40-312,020,631.60-100,518,330.40

Finding the Fourth Proportional to 208,013,754.40, 312,020,631.60 and 100,518,330.40

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Solution

The fourth proportional to 208,013,754.40, 312,020,631.60 and 100,518,330.40 is: 150,777,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,013,754.40 : 312,020,631.60 = 100,518,330.40 : x
  2. Step 2: Convert to fraction form
    208,013,754.40/312,020,631.60 = 100,518,330.40/x
  3. Step 3: Cross multiply
    208,013,754.40x = 312,020,631.60 × 100,518,330.40
  4. Step 4: Simplify right side
    208,013,754.40x = 31,363,792,938,785,484
  5. Step 5: Solve for x
    x = 31,363,792,938,785,484/208,013,754.40
  6. Step 6: Final answer
    x = 150,777,495.60

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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.