Finding the Fourth Proportional to 270,038.68, 372,642.12 and 155,308.66
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Solution
The fourth proportional to 270,038.68, 372,642.12 and 155,308.66 is: 214,319.47
Step by Step Solution
- Step 1: Write the proportion equation
270,038.68 : 372,642.12 = 155,308.66 : x - Step 2: Convert to fraction form
270,038.68/372,642.12 = 155,308.66/x - Step 3: Cross multiply
270,038.68x = 372,642.12 × 155,308.66 - Step 4: Simplify right side
270,038.68x = 57,874,547,385.15 - Step 5: Solve for x
x = 57,874,547,385.15/270,038.68 - Step 6: Final answer
x = 214,319.47
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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.