Home / 315,021,763.20-472,390,927.20-120,868,651.20

Finding the Fourth Proportional to 315,021,763.20, 472,390,927.20 and 120,868,651.20

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Solution

The fourth proportional to 315,021,763.20, 472,390,927.20 and 120,868,651.20 is: 181,248,602.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,021,763.20 : 472,390,927.20 = 120,868,651.20 : x
  2. Step 2: Convert to fraction form
    315,021,763.20/472,390,927.20 = 120,868,651.20/x
  3. Step 3: Cross multiply
    315,021,763.20x = 472,390,927.20 × 120,868,651.20
  4. Step 4: Simplify right side
    315,021,763.20x = 57,097,254,209,781,392
  5. Step 5: Solve for x
    x = 57,097,254,209,781,392/315,021,763.20
  6. Step 6: Final answer
    x = 181,248,602.10

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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.