Home / 388,068.09-535,533.12-218,302.21

Finding the Fourth Proportional to 388,068.09, 535,533.12 and 218,302.21

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Solution

The fourth proportional to 388,068.09, 535,533.12 and 218,302.21 is: 301,256.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,068.09 : 535,533.12 = 218,302.21 : x
  2. Step 2: Convert to fraction form
    388,068.09/535,533.12 = 218,302.21/x
  3. Step 3: Cross multiply
    388,068.09x = 535,533.12 × 218,302.21
  4. Step 4: Simplify right side
    388,068.09x = 116,908,062,532.68
  5. Step 5: Solve for x
    x = 116,908,062,532.68/388,068.09
  6. Step 6: Final answer
    x = 301,256.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.