Home / 315,021,750.45-472,390,908.08-120,868,638.45

Finding the Fourth Proportional to 315,021,750.45, 472,390,908.08 and 120,868,638.45

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Solution

The fourth proportional to 315,021,750.45, 472,390,908.08 and 120,868,638.45 is: 181,248,582.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,021,750.45 : 472,390,908.08 = 120,868,638.45 : x
  2. Step 2: Convert to fraction form
    315,021,750.45/472,390,908.08 = 120,868,638.45/x
  3. Step 3: Cross multiply
    315,021,750.45x = 472,390,908.08 × 120,868,638.45
  4. Step 4: Simplify right side
    315,021,750.45x = 57,097,245,875,184,360
  5. Step 5: Solve for x
    x = 57,097,245,875,184,360/315,021,750.45
  6. Step 6: Final answer
    x = 181,248,582.97

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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.