Home / 315,009,021.60-472,513,532.40-206,169,904.80

Finding the Fourth Proportional to 315,009,021.60, 472,513,532.40 and 206,169,904.80

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Solution

The fourth proportional to 315,009,021.60, 472,513,532.40 and 206,169,904.80 is: 309,254,857.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,009,021.60 : 472,513,532.40 = 206,169,904.80 : x
  2. Step 2: Convert to fraction form
    315,009,021.60/472,513,532.40 = 206,169,904.80/x
  3. Step 3: Cross multiply
    315,009,021.60x = 472,513,532.40 × 206,169,904.80
  4. Step 4: Simplify right side
    315,009,021.60x = 97,418,069,991,619,712
  5. Step 5: Solve for x
    x = 97,418,069,991,619,712/315,009,021.60
  6. Step 6: Final answer
    x = 309,254,857.20

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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.