Finding the Fourth Proportional to 386,707.84, 533,619.84 and 216,931.84
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Solution
The fourth proportional to 386,707.84, 533,619.84 and 216,931.84 is: 299,345.19
Step by Step Solution
- Step 1: Write the proportion equation
386,707.84 : 533,619.84 = 216,931.84 : x - Step 2: Convert to fraction form
386,707.84/533,619.84 = 216,931.84/x - Step 3: Cross multiply
386,707.84x = 533,619.84 × 216,931.84 - Step 4: Simplify right side
386,707.84x = 115,759,133,751.71 - Step 5: Solve for x
x = 115,759,133,751.71/386,707.84 - Step 6: Final answer
x = 299,345.19
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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.