Home / 315,021,743.70-472,390,897.95-120,868,631.70

Finding the Fourth Proportional to 315,021,743.70, 472,390,897.95 and 120,868,631.70

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Solution

The fourth proportional to 315,021,743.70, 472,390,897.95 and 120,868,631.70 is: 181,248,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,021,743.70 : 472,390,897.95 = 120,868,631.70 : x
  2. Step 2: Convert to fraction form
    315,021,743.70/472,390,897.95 = 120,868,631.70/x
  3. Step 3: Cross multiply
    315,021,743.70x = 472,390,897.95 × 120,868,631.70
  4. Step 4: Simplify right side
    315,021,743.70x = 57,097,241,462,750,832
  5. Step 5: Solve for x
    x = 57,097,241,462,750,832/315,021,743.70
  6. Step 6: Final answer
    x = 181,248,572.85

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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.