Home / 208,447,153.50-312,670,740-142,803,561.18

Finding the Fourth Proportional to 208,447,153.50, 312,670,740 and 142,803,561.18

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Solution

The fourth proportional to 208,447,153.50, 312,670,740 and 142,803,561.18 is: 214,205,348.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,447,153.50 : 312,670,740 = 142,803,561.18 : x
  2. Step 2: Convert to fraction form
    208,447,153.50/312,670,740 = 142,803,561.18/x
  3. Step 3: Cross multiply
    208,447,153.50x = 312,670,740 × 142,803,561.18
  4. Step 4: Simplify right side
    208,447,153.50x = 44,650,495,148,785,872
  5. Step 5: Solve for x
    x = 44,650,495,148,785,872/208,447,153.50
  6. Step 6: Final answer
    x = 214,205,348.45

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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.